1. different constellations are visible at different times of year because of?
a. the relative motion between earth and the sun.
b. the relative motion between earth and the moon.
c. the celestial equator.
d. the celestial sphere.
2. a galaxy is composed of stars and?
a. interstellar medium.
b. plasmatic medium.
c. nebular medium.
d. gaseous medium.
3. once the big bang occurred, everything in the universe started to?
a. live and thrive.
b. expand.
c. attach itself to each other.
d. gravitate toward the sun
4. which stars are the most common?
a. red giants
b. white dwarfs
c. low-mass main sequence
d. high-mass main sequence
5. unlike jovian planets, the terrestrial planets are small, dense, and?
a. rocky
b. gaseous
c. metallic
d. tilted
6. how does gravitational force of the moon affect earth?
a. the moons gravity is too small to affect earth
b. the moons gravity pulls on earths oceans, causing tides
c. the moons gravity is so large that it causes large tsunami waves.
d. the moons gravity is slowly pulling earth closer to the moon
Answers: 2
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(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.
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1. different constellations are visible at different times of year because of?
a. the...
a. the...
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